EP2643140A2 - Dispositif et procédé de mise en forme ciblée d'un profilé plastique extrudé - Google Patents

Dispositif et procédé de mise en forme ciblée d'un profilé plastique extrudé

Info

Publication number
EP2643140A2
EP2643140A2 EP11802664.0A EP11802664A EP2643140A2 EP 2643140 A2 EP2643140 A2 EP 2643140A2 EP 11802664 A EP11802664 A EP 11802664A EP 2643140 A2 EP2643140 A2 EP 2643140A2
Authority
EP
European Patent Office
Prior art keywords
calibration
plastic profile
extrusion
deformation
curvature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11802664.0A
Other languages
German (de)
English (en)
Inventor
Erwin KRUMBÖCK
Gerhard Anders
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Greiner Tool Tec GmbH
Original Assignee
Greiner Tool Tec GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Greiner Tool Tec GmbH filed Critical Greiner Tool Tec GmbH
Publication of EP2643140A2 publication Critical patent/EP2643140A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/907—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using adjustable calibrators, e.g. the dimensions of the calibrator being changeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/131—Curved articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/266—Means for allowing relative movements between the apparatus parts, e.g. for twisting the extruded article or for moving the die along a surface to be coated
    • B29C48/2665—Means for allowing relative movements between the apparatus parts, e.g. for twisting the extruded article or for moving the die along a surface to be coated allowing small relative movement, e.g. adjustments for aligning the apparatus parts or for compensating for thermal expansion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/355—Conveyors for extruded articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92571—Position, e.g. linear or angular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92666—Distortion, shrinkage, dilatation, swell or warpage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92923—Calibration, after-treatment or cooling zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/885—External treatment, e.g. by using air rings for cooling tubular films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/904—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using dry calibration, i.e. no quenching tank, e.g. with water spray for cooling or lubrication
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/905—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using wet calibration, i.e. in a quenching tank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/08—Bending or folding of tubes or other profiled members
    • B29C53/083—Bending or folding of tubes or other profiled members bending longitudinally, i.e. modifying the curvature of the tube axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/16—Straightening or flattening
    • B29C53/20—Straightening or flattening of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/001—Profiled members, e.g. beams, sections
    • B29L2031/003—Profiled members, e.g. beams, sections having a profiled transverse cross-section

Definitions

  • the invention relates to a device for targeted
  • Plastic profiles are often produced by extrusion.
  • a substantially homogeneous melt is prepared and to a pressure of about 200 to 400 bar and a
  • the melt is pressed due to the high pressure through an extrusion die.
  • the exit of the extrusion die for the melt has approximately the contour of the desired plastic profile.
  • the extruded KunststoffStoffprofil (in the form of a melt strand) enters a calibration device to be cooled in this while maintaining the profile contour.
  • the dry calibration has at least one calibrator block.
  • the at least one Kaiibratorblock In the at least one Kaiibratorblock the still soft plastic of the extruded plastic profile by means of an applied negative pressure to the profile close wall
  • Calibration device is made by cold water, which is passed through cooling channels in the vicinity of the walls.
  • the wet calibration usually has at least one vacuum tank, with several vacuum tanks this
  • plastic profile cooled to about 20 to 50 ° C inside is usually a dimensionally stable state and there is no further
  • the plastic profile passes after the wet calibration in a profile trigger and then to a cross-cut saw.
  • the cut-to-length plastic profiles cool in the air
  • Plastic profiles is straightness.
  • Plastic profiles such as Hollow profiles for
  • Calibrator blocks and the Kalibrierblenden are aligned along the entire calibration length exactly along a straight line (for example, on stop edges, center holes, a free
  • Plastic profiles with an asymmetric structure eg a hollow section with a projecting, single-walled profile part (eg a web) tend to curve when cooled in a "straight calibration.” The reason is the different cooling rate
  • the projecting, single-walled profile part cools much faster than the more massive hollow chamber part.
  • Plastic profiles in the sense above) require beyond the mere cooling beyond measures to be really cool after cooling to room temperature.
  • several options are known in principle.
  • Calibration elements e.g., calibrators or calibration orifices
  • Calibration elements are selectively skewed to a straight orientation so that the continuous plastic profile follows a curved line. As a result, the plastic profile is cooled in a curved shape.
  • the artificially induced curvature is chosen so that it is exactly opposite to the curvature that fell would result in cooling the plastic profile. In the end, the cooling thus leads to a compensation of the deliberately applied curvature and leads to a straight plastic profile.
  • the counterbending is thus the targeted application of a first deformation before the cooling of the plastic profile, the second deformation compensated by the cooling of the first deformation and leads to a straight plastic profile.
  • the first deformation was in the above case by a
  • the object is simple and efficient devices and methods for the targeted deformation of extruded
  • An adjusting device serves for the targeted spatial adjustment of at least one calibration element in one
  • Calibration a predetermined curvature can be imposed.
  • a complex oblique arrangement of parts of the entire calibration can be dispensed with.
  • the targeted deformation can be done exactly at the points where the best effect can be achieved. It is advantageous if the at least one calibration element is used as calibration diaphragm or tank calibrator for supporting the
  • the extrusion direction of the at least one calibration element deviates from the extrusion axis as a linear continuation of the extrusion die, in particular offset and / or arranged at an angle. These deviations are suitable to the curvature in the extruded
  • the adjusting device has at least one displacement possibility transversely to the extrusion direction and / or a possibility of pivoting out of the plane of the extrusion, wherein in particular a manually operable adjusting lever is provided for at least one of the adjustment options.
  • the calibration elements can be set very precisely to the curvature required for the first targeted deformation.
  • the second deformation then occurs during cooling of the extruded plastic profile.
  • first and / or last calibration element in the extrusion direction is hinged and / or displaceably connected to a wall of a vacuum tank
  • at least one calibration element with a through the adjusting device in particular by a manually operable
  • Adjustment device adjustable bending beam connected to define a curvature in the extrusion profile.
  • a bending beam can e.g. manually adjusted easily to a complex curvature of space. It is advantageous if the
  • Bending stiffness of the bending beam is at least partially five to fifty times as large as that of the extruded plastic profile. With these bending stiffnesses a stable alignment of the calibration elements can be achieved. For this purpose, it may be advantageous if the cross section of the
  • Bending support along a longitudinal extent and / or the bending stiffness is at least partially variable.
  • the deformation of the bending beam can be selectively influenced.
  • the bending beam sets in regions with a large cross-section deformation greater resistance
  • the task is also targeted by a procedure
  • Applied adjusting device and is used for targeted spatial adjustment of at least one calibration element in a calibration. It is advantageous if after the
  • Fig. 1 a perspective view of a plastic profile with the property of curving when solidifying
  • Fig. 1A a perspective view of the plastic profile of Figure 1 after the curvature ..;
  • FIG. 2 shows a perspective view of a calibration element on a base plate
  • FIG. 3 side view of a vacuum tank with each other
  • Fig. 4 is a plan view of the vacuum tank of FIG. 3;
  • FIG. 5 shows a perspective view of the vacuum tank with five calibration elements on base plates
  • Fig. 6 is a perspective view of a
  • FIG. 7 shows a detailed view of FIG. 6 with a scale for adjusting the adjusting device
  • Fig. 8 is a perspective view of a
  • FIG. 9 shows a view of the calibration diaphragm carrier according to FIG. 8 with a fastening device
  • FIG. 10 is a side view of a vacuum tank with a
  • Embodiment with bending beam in the initial state is a side view of the embodiment of FIG. 10 with a bending beam and an adjusting device in
  • FIG. 12 shows a side view of the embodiment according to FIG. 11, without a plastic profile
  • Fig. 13 is a perspective view of a
  • Fig. 14 shows an embodiment with the representation of a
  • Fig. 15 shows another embodiment with a representation of the extrusion line in side view.
  • the present invention relates to a method and a device for counter bending by means of at least one
  • Adjustment device 50 within a
  • Calibration device in particular a wet calibration.
  • the support elements for the plastic profile 10 within the at least one vacuum tank are targeted from the
  • the extrusion direction E is understood to be the direction with which the plastic profile 10 runs through the calibration path.
  • the extrusion axis A is understood to mean the way in which the center of gravity of the cross section of the plastic profile 10 traverses in the usually linear arrangement of the calibration elements 21, 22, 23, 24, 25, 26, 27, 29.
  • the extrusion web B can be continuous coaxial with
  • the melt is therefore only briefly expanded and / or compressed and follows more or less without resistance to this deformation. If it then comes to solidify the inside of the outer walls of the plastic profile 10, that is Plastic profile 10 already aligned straight again and causes only a small effect of the previous curvature.
  • Plastic profiles 10, here the rear vacuum tanks 40 are normally arranged in the extrusion direction E in alignment. If, in the sense of counterbending, a curvature of a calibration range, e.g. desired to the right, so must
  • Fig. 14 the extrusion web B of a plastic profile 10 is shown schematically in a side view, wherein the extrusion web B in five sections I to V has different curvatures.
  • the arrow indicates the direction of extrusion E.
  • Extrusion web B begins when the viscous plastic mass leaves the nozzle.
  • the extrusion line B in zone I runs initially approximately 1 m straight, collinear to
  • Zone III is directed opposite to the desired curvature, and this curvature will not affect the plastic profile either imprinted, because here too the inner wall area is still insufficiently frozen.
  • the deformation in Zones II and III should therefore be considered as preparatory to the deformation in zone IV; Zone II is curved in the same way, zone III in
  • zone II tends to have a smaller radius.
  • the second deformation (curvature) in the zone III is to be impressed on the plastic profile.
  • This zone is made longer than in the embodiment of FIG. 15, because the solidification of the inside of the wall in this area is to be largely completed.
  • Plastic profile 10 imposed curvature takes place in this illustration "up", opposite as before
  • FIGS. 1 and 1A a part of an extruded plastic profile 10 is shown with the characteristic for undesired warping.
  • the arrow E indicates the extrusion direction.
  • a profile part is arranged as a single-walled web 2.
  • the single-walled profile part 2 of the plastic profile 10 cools rapidly relative to the hollow chamber area 1 and forms a characteristic length in the longitudinal direction.
  • the hollow chamber region 1 cools comparatively slower. As long as the temperature is above the solidification temperature of the plastic used (e.g., PVC), the plastic used (e.g., PVC), the plastic used (e.g., PVC), the plastic used (e.g., PVC), the plastic used (e.g., PVC), the plastic used (e.g., PVC), the plastic used (e.g., PVC), the plastic used (e.g., PVC), the plastic used (e.g., PVC).
  • Hollow chamber part 1 has pulled the lower single-walled profile part 2 upwards.
  • FIG. 2 shows a first embodiment in which a calibration element 20 is arranged on a base plate 30.
  • a calibration element 20 is arranged on a base plate 30.
  • Inner surfaces all arranged collinear. In principle, it is possible that the inner surfaces are also curved.
  • the calibration element 20 is designed to be a
  • Plastic profile 10, as shown in Fig. 1, can accommodate.
  • the calibration element 20 and the base plate 30 are used in the wet calibration of an extrusion line (for reasons of clarity Y not shown) used.
  • the extrusion direction E is shown by an arrow.
  • the calibration element 20 in this embodiment has internal calibration surfaces, which are adapted to the outer contours of the plastic profile 10 (not shown here).
  • the calibration element 20 has a wall thickness of approximately between 2 and 4 mm in order to ensure good heat conduction from the plastic profile 10 into the surrounding cooling water
  • the wall thicknesses in certain areas that are adapted to the purpose can be selected.
  • the base plate 30 is designed so that several components
  • Base plates 30 of the same or a similar design can be connected to a kind of chain, so that a plurality of base plates 30 (and thus calibration elements 21, 22, 23, 24, 25, 26, 27, 28) can be arranged one behind the other in the longitudinal direction.
  • Calibration elements 20 for the same plastic profile 10 are each arranged on the base plates 30.
  • Fig. 2 is schematically a connecting element 36 (here u.a.
  • Base plate 30 can come into engagement.
  • Fig. 3 an embodiment with such a connection between the base plates 30 is shown.
  • the connecting elements 36 of the base plates 30 can perform a function such as e.g. have a universal joint with a locked twisting direction or a universal joint with two degrees of freedom. Two in the direction of extrusion E in a row
  • base plates 30 are thus hinged in the longitudinal direction. They can be pivoted in two main directions, in this case horizontally (rotation angle cpi) and vertically (rotation angle (2) f ) in an angular range of about 0 to 20 °
  • Alternative connecting elements 36 have elastic parts, e.g. made of plastic or metal.
  • FIGs. 3 to 5 different views of an embodiment of the device are shown.
  • the side walls of the vacuum tank 40 are shown transparent for the sake of clarity.
  • Fig. 3 is a side view is shown, wherein the plastic profile 10, not shown here from the left in
  • Extrusion direction E enters the vacuum tank 40.
  • the first base plate 31 is coupled on the input side articulated to the vacuum tank 40, so that it is pivotable in two spatial directions. In Fig. 3 it can be seen that the first base plate 31 is inclined downwards, in the plan view of Fig. 4 it can be seen that the first base plate 31 additionally has a slight inclination to the right.
  • Each further base plate 32, 33, 34, 35 is - in
  • Base plate 31, 32, 33, 34 coupled.
  • the last base plate 35 is on the output again movably coupled to the vacuum tank 40, here, however, in addition to the articulated
  • Extrusion direction E to compensate for changes in length due to various deflections can.
  • an adjusting device (not shown here for reasons of clarity) is hinged to each base plate (see FIGS. 6 and 7) on the output side, so that the
  • the base plates form a chain, a desired, closed polyline of the base plates can be adjusted with the individual adjustment devices, whereby the curvature of the extrusion web B is specifically adjustable.
  • the curvature is to be understood here in particular as a deviation from the extrusion axis A. Therefore, as a result of the sectionwise adaptation of the curvature, a "harmonic curve course" results for the plastic profile 10.
  • the continuous plastic profile 10 is between the calibration elements 21, 22, 23, 24, 25 with
  • the adjusting device 50 in each case acts on the base plates 31, 32, 33, 34, 35.
  • the adjusting device 50 at least partially engages the calibration elements 21, 22, 23, 24, 25.
  • FIGs. 6 and 7 are details of a mechanical
  • Embodiment of the adjusting device 50 shown.
  • the adjusting lever 51 engages with two pins 52, 53 in a slot on - in the direction of extrusion E - the end of the base plate 31, 32, 33, 34, 35 a. If the lever system is displaced axially (see arrow A), then the output-side end of the base plate 31, 32, 33, 34, 35 is displaced laterally. This deflection leads to a horizontal displacement of the
  • the bearing block 54 for the lever system is in the field of
  • Scales 55, 56 are arranged on the shaft and on the bearing block 54, so that the position of the lever system (and thus the position of the base plate 31, 32, 33, 34, 35 coupled thereto) can be read off. On the basis of these measured values, a reinstatement of the once found positioning of the base plates is possible later.
  • the illustrated in Fig. 6 and 7 embodiment of the lever system is mechanically adjustable by hand, which in the
  • the production certainly offers advantages.
  • at least a part of the adjusting device 50 is driven hydraulically, motorically or pneumatically.
  • Angle sensors the position of the base plate 31, 32, 33, 34, 35 could be detected or adjusted.
  • certain geometric shapes could be adjusted.
  • the adjustment device 50 could be operated with automatic control so that the adjustment changes automatically during extrusion.
  • the calibration diaphragms 21, 22 fulfill in principle the same purpose as the calibration elements 21, 22, 23, 24, 25 in the embodiment according to FIGS. 1 to 5, wherein they
  • the base plates 31, 32, 33, 34, 35 can be designed simpler here than in the embodiment according to FIGS. 1 to 3, if a different type of connection of the base plates 31, 32, 33, 34, 35 is selected.
  • illustrated embodiment has eight calibration diaphragms 21,
  • the Kalibrierblenden 21, 22, 23, 24, 25, 26, 27, 28 are placed on the bending beam 70.
  • This bending beam 70 takes on the task of arranging a plurality of calibration apertures 21, 22, 23, 24, 25, 26, 27, 28 along a harmonic (i.e., kink-free), spatially-extending curve. As before, deflections in two spatial directions are possible here again in order to achieve a complex first deformation of the plastic profile.
  • a straight bending beam 70 is installed in the vacuum tank 40.
  • the bending beam 70 five base plates 31, 32, 33, 34, 35 are connected to the total of eight calibration diaphragms 21, 22, 23, 24, 25, 26, 27, 28 are placed. Not every base plate 31, 32, 33, 34, 35 is in this case provided with two calibration diaphragms 21, 22, 23, 24, 25, 26, 27, 28.
  • Plastic profile 10 passes through all calibration diaphragms 21, 22, 23, 24, 25, 26, 27, 28.
  • the bending beam 70 has a moderate flexural rigidity so that it may be e.g. can be spatially bent with hand power.
  • the bending beam 70 can be made of plastic, such as e.g. Polyethylene or PVC, or even of metal, e.g.
  • the cross section of the bending beam 70 is here
  • the bending stiffness of the bending beam 70 should preferably be higher than that of the one to be produced
  • the bending stiffness of the bending beam 70 is five to fifty times as large as that of the plastic profile 10th
  • the bending beam 70 has a linear shape.
  • the bending beam 70 is formed with two different clamping of the ends
  • Bending beam 70 firmly clamped he has, so to speak, a "fixed bearing on.” That is, when bending it does not buckle at the clamping point, but curves.
  • the bending beam 70 is in the longitudinal direction
  • Two adjusting devices 40, 41 allow a deflection of the bending beam 70 in the vertical and in the horizontal direction.
  • the adjusting devices 40, 41 are similar here
  • the calibration diaphragms 21, 22, 23, 24, 25, 26, 27, 28 also simulate this curve and force the plastic profile 10 to curve.
  • the plastic profile 10 solidifies at least partially in a curved shape, which ultimately - after the processes described above during cooling - leads to a straight plastic profile 10.
  • the ends of the bending beam 70 may also be articulated, analogously as shown in the chain-type arrangement of rigid base plates 31, 32, 33, 34, 35 in Figs. 3-5.
  • Biegebiss 70 done in storage. Is the joint centered between the adjacent calibration elements
  • the cross section of the bending beam 70 may also be different over the length.
  • Bending beam 70 and thus also the plastic profile 10 are selectively changed. Depending on the position of the force introduction points and the resulting torque curve, an approximately circular arc-shaped course of the bending line can be effected in regions.
  • Fig. 13 is an adjusting device 40 for a
  • Bending beam 70 shown in perspective. The bending beam 70 and other units are not shown for reasons of clarity.
  • This adjusting device 50 is made similar to that for the base plates 30 (see Figs. 6 and 7). Deviating from this, the adjusting device 50 engages here by means of a ball joint. A pin of the ball joint is firmly connected to the bending beam 70. The distance of the ball head to the adjusting shaft is made variable to enforced
  • a portion of the bending beam 70 can therefore by the
  • Adjustment device 50 in a certain area
  • Bend beam 70 is that fewer adjustment devices 50 are required. With only two Versteilvorraumen 50, the curvature can be adjusted at a tank length up to 1500 mm with sufficient accuracy and effectiveness. For tank lengths up to 3000 mm are three Adjustment devices 50 appropriate. Even only one adjusting device 50 permits effective "counterbending" for tank lengths of up to 3000 mm, when it is ensured that the region of greatest deflection in the axial direction exactly coincides with the region of the plastic profile 10 in which "the inner region of the outer walls" stiffens.
  • the adjusting devices 50 (FIGS. 6, 7 and 13) shown have the advantage that the adjustment can be made during the extrusion, ie without opening the lid of the vacuum tank 40. That is, the production is not interrupted when adjusting the device.
  • the adjusting devices 50 shown have the advantage that the adjustment can be made during the extrusion, ie without opening the lid of the vacuum tank 40. That is, the production is not interrupted when adjusting the device.
  • Adjustment also be waived, because an adjustment is usually only in the start-up phase of a

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

L'invention concerne un dispositif de mise en forme ciblée, notamment de cintrage alterné d'un profilé plastique extrudé dans un calibrage à l'état humide, caractérisé par un dispositif de réglage (50) pour le réglage spatial ciblé d'au moins un élément de calibrage (20, 21, 22, 23, 24, 25, 26, 27, 28) dans un dispositif de calibrage. Lors du calibrage par le ou les éléments de calibrage (20, 21, 22, 23, 24, 25, 26, 27, 28), une courbure prédéfinie peut être imprimée au profilé plastique extrudé (10). L'invention concerne également un procédé correspondant.
EP11802664.0A 2010-11-25 2011-11-25 Dispositif et procédé de mise en forme ciblée d'un profilé plastique extrudé Withdrawn EP2643140A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010061997A DE102010061997A1 (de) 2010-11-25 2010-11-25 Vorrichtung und Verfahren zur gezielten Verformung eines extrudierten Kunststoffprofils
PCT/EP2011/071049 WO2012069642A2 (fr) 2010-11-25 2011-11-25 Dispositif et procédé de mise en forme ciblée d'un profilé plastique extrudé

Publications (1)

Publication Number Publication Date
EP2643140A2 true EP2643140A2 (fr) 2013-10-02

Family

ID=45422109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11802664.0A Withdrawn EP2643140A2 (fr) 2010-11-25 2011-11-25 Dispositif et procédé de mise en forme ciblée d'un profilé plastique extrudé

Country Status (3)

Country Link
EP (1) EP2643140A2 (fr)
DE (1) DE102010061997A1 (fr)
WO (1) WO2012069642A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10406738B2 (en) * 2014-10-13 2019-09-10 Processing Technologies International, LLC Die assembly and method of setting up an extrusion system utilizing the die assembly
JP7354529B2 (ja) 2018-08-30 2023-10-03 株式会社リコー 活性エネルギー線硬化型液体、活性エネルギー線硬化型液体セット、造形物の製造方法、及び造形物製造装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1291896B (de) * 1965-10-18 1969-04-03 Buerkle Kg Kehlleistenfabrik Gekuehlte Kalibrierduese in Strangpressanlagen fuer Profile aus thermoplastischem Kunststoff
DE9007478U1 (de) * 1989-10-31 1992-01-16 Friedrich Theysohn GmbH, 4970 Bad Oeynhausen Schwimmende Kunststoffprofilkalibriervorrichtung
JP4221126B2 (ja) * 1999-10-14 2009-02-12 ビューテック株式会社 モールの装着方法、モールの装着装置、及びモール付ガラス板
AT409736B (de) * 2001-04-09 2002-10-25 A & G Extrusion Technology Gmb Vorrichtung zum kühlen und kalibrieren eines extrudierten kunststoffprofils
JP2003025416A (ja) * 2001-07-19 2003-01-29 Sekisui Plastics Co Ltd 熱可塑性樹脂組成物の押出し成形方法及び押出し成形装置
JP3774204B2 (ja) * 2003-04-09 2006-05-10 東海興業株式会社 長尺状成形品の製造方法及び製造装置
JP4124698B2 (ja) * 2003-05-28 2008-07-23 鬼怒川ゴム工業株式会社 押出成形装置および押出成形方法
US7878792B2 (en) 2005-03-16 2011-02-01 Greiner Tool. Tec Gmbh Support arrangement for an extrusion tool and extrusion tool for moulding an object
BE1018382A3 (nl) * 2008-12-22 2010-09-07 Wybo Carlos Bekledingspaneel.
DE102009060161A1 (de) * 2009-12-23 2011-06-30 SaarGummi technologies S.à.r.l. Verfahren zur Herstellung eines Dichtungsstrangs

Also Published As

Publication number Publication date
WO2012069642A2 (fr) 2012-05-31
DE102010061997A1 (de) 2012-05-31
WO2012069642A3 (fr) 2012-10-26

Similar Documents

Publication Publication Date Title
EP0456121B1 (fr) Procédé pour le pliage d'objets plats ainsi que la machine de pliage pour la mise en oeuvre du procédé
DE19535930C1 (de) Vorrichtung zur veränderlichen Begrenzung eines flachen Fließkanals und Verfahren zum Austragen einer Massebahn mit veränderlicher Geometrie
EP3320993B1 (fr) Dispositif et procédé de cintrage de profilés ou de matériaux en barres, en particulier de profilés ou de matériaux en barres dissymétriques et ouverts
WO2011157330A1 (fr) Procédé et outil de formage pour la réalisation d'une préforme en matériau composite à fibres
EP3222407B1 (fr) Automate de soudage
DE2111763A1 (de) Strangpressform sowie Verfahren und Vorrichtung zu deren Herstellung
EP2643140A2 (fr) Dispositif et procédé de mise en forme ciblée d'un profilé plastique extrudé
DE10235151B4 (de) Haltevorrichtung für eine Extrusionsdüse
EP0988195B1 (fr) Procede pour produire des essuie-glaces a barres plates destines a des vehicules et comportant des barres plates cintrees
DE2532406B2 (de) Verfahren und Vorrichtung zum kontinuierlichen Herstellen eines Rohres aus einer Bahn aus einem thermoplastischen Schaumstoff
EP1346814B1 (fr) Dispositif de calibration
AT512718B1 (de) Verfahren und Vorrichtung zum Biegen einer Ecke in ein Profil aus thermoplastischem Grundmaterial
EP3655367A1 (fr) Caisson de soufflage pour la trempe thermique de vitres
EP2011626B1 (fr) Tête d'extrusion
EP3830045A1 (fr) Procédé de mise en forme de panneaux en verre
DE2927098A1 (de) Vorrichtung zum formen einer plastikrohrleitung
DE102021121616B3 (de) Verfahren zur Herstellung von Blechbauteilen und Vorrichtung hierfür
DE102010034096A1 (de) Vorrichtung zum Herstellen von Hinterfüllten Dekorteilen
EP0096248A1 (fr) Procédé et dispositif pour la fabrication d'un objet rigide et unitaire à parois minces en matière synthétique étirée
EP1946906B1 (fr) Procédé destiné à la fermeture du côté frontal d'une plaque de chambre creuse ainsi que dispositif d'exécution du procédé
DE19923480A1 (de) Halbzeug aus Polymeren sowie Verfahren zu seiner Herstellung
EP4556671A1 (fr) Vitrage isolant à croisillons, et dispositif et procédé d'assemblage d'un tel vitrage
DE60013103T2 (de) Verfahren, Vorrichtung und Werkstück zur Herstellung eines Wärmeübertragungsteils
DE19963056C2 (de) Verfahren und Vorrichtung zum mehrstufigen Umformen eines Rohres
DE2855639A1 (de) Verfahren und vorrichtung zum herstellen eines duennen, verdrehungsfreien metallstreifens

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20130620

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20160610

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20161021